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Finding the Fourth Proportional to 384.30, 576.61 and 222.12

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Solution

The fourth proportional to 384.30, 576.61 and 222.12 is: 333.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.30 : 576.61 = 222.12 : x
  2. Step 2: Convert to fraction form
    384.30/576.61 = 222.12/x
  3. Step 3: Cross multiply
    384.30x = 576.61 × 222.12
  4. Step 4: Simplify right side
    384.30x = 128,076.06
  5. Step 5: Solve for x
    x = 128,076.06/384.30
  6. Step 6: Final answer
    x = 333.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.